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Sources of nitrogen and phosphorus supporting the growth of bacteria and phytoplankton in an oligotrophic Canadian shield lake
Author(s) -
Sterner Robert W.,
Chrzanowski Thomas H.,
Elser James J.,
George Nicolas B.
Publication year - 1995
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1995.40.2.0242
Subject(s) - algae , phytoplankton , plankton , phosphorus , environmental science , nutrient , bacteria , nitrogen , environmental chemistry , algal bloom , microorganism , ecology , biology , botany , chemistry , organic chemistry , genetics
We used a dilution gradient technique to determine the relative importance of N and P derived from the dissolved pool, storage, and recycling by planktonic consumers to the growth of bacteria and algae in an oligotrophic lake. Recycling was the dominant source of N for both algae and bacteria and the dominant source of P for bacteria. However, storage was an important source of P for algae early in the year, but P recycling was a dominant source for algae late in the year. Models of nutrient flux in the microbial and classic food webs must be combined in a manner consistent with the integrated nature of these fluxes.